Fresenius Names Associate CMO, President of Service Operations

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WALTHAM, Mass.—Fresenius has named Jeffrey L. Hymes, MD, its senior vice president and associate chief medical officer. In addition, Simon Castellanos will become executive vice president and president of Fresenius Medical Services.

In this new role,  Hymes will report to Fresenius chief medical officer Franklin Maddux, MD.  Hymes joined FMCNA in 2007. He is a graduate of Yale University and the Albert Einstein College of Medicine, and completed his internship and residency in Medicine at Yale-New Haven Hospital.

Hymes was a fellow in the Clinical Nephrology department at the Boston University Medical Center and subsequently became a Clinical Instructor at the Boston University Medical Center, practicing nephrology in the Boston area. He has developed a large and extensive nephrology practice in the Nashville area, serving as President of Nephrology Associates in Nashville.

In this expanded role, Simon Castellanos, who was executive vice president and president of the North Division of Fresenius Medical Services (FMS), the company's dialysis services division, will be responsible for the operations of more than 1,800 dialysis clinics across 48 states and Puerto Rico and will coordinate the efforts of the division's four regional Presidents.

He will continue to report to Rice Powell, Fresenius CEO, who has been serving as Acting President of FMS.

Castellanos joined FMCNA in 2003 after working at Gambro Healthcare International where he held various finance positions, including Chief Financial Officer for the International Division.

"These key appointments position us well to meet the challenges ahead and to continue delivering world-class outcomes for our patients, employees and shareholders," said Powell. "The level of talent and experience that Frank, Jeff and Simon provide to our organization will serve to further strengthen our executive leadership team."

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